From: Boris Brezillon <boris.brezillon@free-electrons.com>
To: lkp@lists.01.org
Subject: Re: 040de6ebde ("mtd: Fallback to ->_read/write_oob() when ->_read/wr..."): BUG: unable to handle kernel NULL pointer dereference at (null)
Date: Sun, 25 Jun 2017 18:02:53 +0200 [thread overview]
Message-ID: <20170625180253.22503dc6@bbrezillon> (raw)
In-Reply-To: <594fcd86.GwKK3kecNMcm3YFa%fengguang.wu@intel.com>
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Le Sun, 25 Jun 2017 22:49:42 +0800,
kernel test robot <fengguang.wu@intel.com> a écrit :
> Greetings,
>
> 0day kernel testing robot got the below dmesg and the first bad commit is
>
> git://git.infradead.org/users/dedekind/l2-mtd.git nand/next
>
> commit 040de6ebdeea7b666c0e33c351b2847050275579
> Author: Boris Brezillon <boris.brezillon@free-electrons.com>
> AuthorDate: Sun Jun 11 22:42:55 2017 +0200
> Commit: Boris Brezillon <boris.brezillon@free-electrons.com>
> CommitDate: Sat Jun 24 21:32:49 2017 +0200
>
> mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
>
> Some MTD sublayers/drivers are implementing ->_read/write_oob() and
> providing dummy wrappers for their ->_read/write() implementations.
> Let the core handle this case instead of duplicating the logic.
>
> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
> Acked-by: Brian Norris <computersforpeace@gmail.com>
I dropped the patch and sent a new version that hopefully fixes the
problem.
>
> a57ce43950 MAINTAINERS: add entry for Denali NAND controller driver
> 040de6ebde mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
> 4922adb306 mtd: nand: mtk: add ->setup_data_interface() hook
> +------------------------------------------+------------+------------+------------+
> | | a57ce43950 | 040de6ebde | 4922adb306 |
> +------------------------------------------+------------+------------+------------+
> | boot_successes | 35 | 2 | 4 |
> | boot_failures | 0 | 13 | 15 |
> | BUG:unable_to_handle_kernel | 0 | 13 | 15 |
> | Oops:#[##] | 0 | 13 | 15 |
> | Kernel_panic-not_syncing:Fatal_exception | 0 | 13 | 15 |
> +------------------------------------------+------------+------------+------------+
>
> [ 15.809135] pidof (223) used greatest stack depth: 13656 bytes left
> [ 16.032144] udevadm (227) used greatest stack depth: 13144 bytes left
> [ 16.032144] udevadm (227) used greatest stack depth: 13144 bytes left
> [ 16.246605] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input5
> [ 16.246605] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input5
> [ 16.378803] BUG: unable to handle kernel NULL pointer dereference at (null)
> [ 16.378803] BUG: unable to handle kernel NULL pointer dereference at (null)
> [ 16.381166] IP: (null)
> [ 16.381166] IP: (null)
> [ 16.382130] PGD 1a6c6067
> [ 16.382130] PGD 1a6c6067
> [ 16.382133] P4D 1a6c6067
>
> # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
> git bisect start 11a0bb67d48fefc2610dfaa27f477c5cdab1c45b 41f1830f5a7af77cf5c86359aba3cbd706687e52 --
> git bisect bad af0dc25c97fb9907e8b0831552604b6f43e764ae # 19:01 B 0 11 22 0 Merge 'hwmon/hwmon-next' into devel-spot-201706251637
> git bisect good 384fc8848f2753daaea06bd0f8b4e349000a49da # 19:14 G 11 0 0 0 Merge 'linux-review/Pierre-Louis-Bossart/Lenovo-tablet-fixes/20170625-121908' into devel-spot-201706251637
> git bisect good a0a2a58fdca1e037a8cdb46f34e9d40383742f55 # 19:28 G 11 0 0 0 Merge 'linux-review/Harry-Chou/mtd-spi-nor-Add-support-for-Spansion-S25FL064L/20170624-234717' into devel-spot-201706251637
> git bisect good f7c851f74833faaa5b2199d4c8c6fa6841e5ae2c # 19:42 G 11 0 0 0 Merge 'linux-review/Breno-Leitao/powerpc-kernel-Avoid-redundancies-on-giveup_all/20170625-101622' into devel-spot-201706251637
> git bisect good 24814d327477c4ec16eec5fa9bfc08c234ea4eea # 19:52 G 11 0 0 0 Merge 'chao-linux/quota' into devel-spot-201706251637
> git bisect good df99874d819c1601daec45ece679eebd3f85132d # 20:14 G 11 0 0 0 Merge 'open-channel-ssd/pblk.for-4.13' into devel-spot-201706251637
> git bisect bad 007fcc68c05959efa273b5f126e6e31cf6ccfd3a # 20:27 B 0 1 13 0 Merge 'mtd-next/nand/next' into devel-spot-201706251637
> git bisect good d49f5790278d18fd6b8e474397d9abfdf29a48f2 # 20:46 G 11 0 0 0 mtd: nand: denali: use interrupt instead of polling for bank reset
> git bisect good d1ab0da84dcbac30a9039ccef72d69bf0a68bfc7 # 20:57 G 11 0 0 0 mtd: nand: ifc: Initialize SRAM for all version >= 1.0
> git bisect bad 92ca434b9c09549193290d6f0f7133375e2d6e4c # 21:05 B 0 1 12 0 mtd: nand: mtk: fix incorrect register setting order about ecc irq
> git bisect good a7adb70a73b7cb220f4515745d2671d2226e0097 # 21:21 G 11 0 0 0 dt-bindings: gpmc: Correct location of generic gpmc binding
> git bisect bad 040de6ebdeea7b666c0e33c351b2847050275579 # 21:28 B 0 5 16 0 mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
> git bisect good a57ce439505da3801e264656a3bdf746505c77ec # 21:48 G 11 0 0 0 MAINTAINERS: add entry for Denali NAND controller driver
> # first bad commit: [040de6ebdeea7b666c0e33c351b2847050275579] mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
> git bisect good a57ce439505da3801e264656a3bdf746505c77ec # 22:06 G 31 0 0 0 MAINTAINERS: add entry for Denali NAND controller driver
> # extra tests with CONFIG_DEBUG_INFO_REDUCED
> git bisect bad 040de6ebdeea7b666c0e33c351b2847050275579 # 22:19 B 0 11 22 0 mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
> # extra tests on HEAD of linux-devel/devel-spot-201706251637
> git bisect bad 11a0bb67d48fefc2610dfaa27f477c5cdab1c45b # 22:19 B 0 13 27 0 0day head guard for 'devel-spot-201706251637'
> # extra tests on tree/branch l2-mtd/nand/next
> git bisect bad 4922adb306240ceee3300a516675e5caef45de73 # 22:28 B 0 1 12 0 mtd: nand: mtk: add ->setup_data_interface() hook
> # extra tests with first bad commit reverted
> git bisect good f7481b7c9c36436afa86a98023a60df9eef2d083 # 22:49 G 11 0 0 0 Revert "mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing"
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/lkp Intel Corporation
prev parent reply other threads:[~2017-06-25 16:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-25 14:49 040de6ebde ("mtd: Fallback to ->_read/write_oob() when ->_read/wr..."): BUG: unable to handle kernel NULL pointer dereference at (null) kernel test robot
2017-06-25 16:02 ` Boris Brezillon [this message]
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